CA2023258A1 - Brake adjusting tool - Google Patents
Brake adjusting toolInfo
- Publication number
- CA2023258A1 CA2023258A1 CA002023258A CA2023258A CA2023258A1 CA 2023258 A1 CA2023258 A1 CA 2023258A1 CA 002023258 A CA002023258 A CA 002023258A CA 2023258 A CA2023258 A CA 2023258A CA 2023258 A1 CA2023258 A1 CA 2023258A1
- Authority
- CA
- Canada
- Prior art keywords
- star wheel
- brake
- pawl
- tool
- adjusting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
- F16D65/56—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut
- F16D65/561—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting within the confines of a drum brake
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/0035—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for motor-vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Braking Arrangements (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A new method and an apparatus for manually rotating the adjusting screw mechanism or star wheel of a vehicle wheel brake is adapted to displace the pawl of the brake adjusting mechanism and disengage it from the star wheel, thereby allowing rotation of the star wheel while the pawl remains disengaged through the use of a single tool, leaving both hands of the mechanic free to manipulate the brake tool.
A new method and an apparatus for manually rotating the adjusting screw mechanism or star wheel of a vehicle wheel brake is adapted to displace the pawl of the brake adjusting mechanism and disengage it from the star wheel, thereby allowing rotation of the star wheel while the pawl remains disengaged through the use of a single tool, leaving both hands of the mechanic free to manipulate the brake tool.
Description
BRAKE ADJUSTING TOOL
BACKGROUND OF TH~ INVENTION
This invention relates to a hand tool and more particularly to a tool and a method for manually adjusting brake shoes by rotating the adjusting wheel (or star wheel) of a vehicle brake.
Vehicles utilizing drum/shoe-type self-adjusting brakes operate such that as the brake shoes wear, an adjusting mechanism operates to reduce the clearance between the partially worn brake shoe and the interior surface of the brake drum. A common method of achieving self-adjustment in brake shoes is to utilize an adjustment screw means, such as a star wheel, that is held in a fixed position by an adjusting lever (or pawl) which is spring biased against the adjusting screw or engagable peripheral projections of a star wheel.
To accomplish proper adjustment of the brake shoes the mechanic must initially insert a first tool into the brake mechanism which deflects the spring-biased pawl from engagement with the adjusting screw, and then insert a second ao tool which allows the mechanic to rotate the adjusting screw or the star wheel to accomplish the necessary brake adjustment. Vpon making an adjustment, the tools must then be removed from the brake so that the brake drum may be rotated and tlle degree of clearance assessed by the mechanic. The repeated insertion and removal of too]s as well as the limited space for accomplishing the adjustment maneuvers can create a tedious operation.
SUMMARY OF THE INVENTION
The present invention provides a method and an apparatus for the adjustment of the brake shoe of a drum/shoe-type brake system. This invention allows the operator to use a single tool to t,oth deflect the pawl of the automatic adjustment mechanism to disengage it from the slar wheel and rotate the adjusting screw of the hrake mechanism through access slots in the rear of the drum brake while the pawl remains disengaged, without removal of the brake drum from the vehicle.
It is therefore an important object of the present invention to provide a method and a tool for the adjustment of the brake shoe of a drum/shoe-type brake system whereby an operator can simultaneously disengage the pawl from the star wheel and rotate the star wheel while the pawl remains disengaged.
Other objects and advantages of this invention will become apparent from the following description taken in connection with the accompanying drawings, w~herein is set forth by way of illustration and example, an embodiment of this invention.
,. ~, BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a perspective view of a conventional drum/shoe-type self-adjusting brake system.
Fig. 2 is a side view taken along line 2-2 of Fig.
1, showing the brake system as in Fig. 1, with the tool of the present invention operably positioned thereon, wherein the pawl is disengaged from the adjusting star wheel mechanism by the too], the broken lines showing the pawl engaged with the star wheel.
Fig. 3 is a fragmentary side view as in Fig. 2 showillg the tool of the present invention, and depicting clockwise movement of the star wheel from its position in Fig.
BACKGROUND OF TH~ INVENTION
This invention relates to a hand tool and more particularly to a tool and a method for manually adjusting brake shoes by rotating the adjusting wheel (or star wheel) of a vehicle brake.
Vehicles utilizing drum/shoe-type self-adjusting brakes operate such that as the brake shoes wear, an adjusting mechanism operates to reduce the clearance between the partially worn brake shoe and the interior surface of the brake drum. A common method of achieving self-adjustment in brake shoes is to utilize an adjustment screw means, such as a star wheel, that is held in a fixed position by an adjusting lever (or pawl) which is spring biased against the adjusting screw or engagable peripheral projections of a star wheel.
To accomplish proper adjustment of the brake shoes the mechanic must initially insert a first tool into the brake mechanism which deflects the spring-biased pawl from engagement with the adjusting screw, and then insert a second ao tool which allows the mechanic to rotate the adjusting screw or the star wheel to accomplish the necessary brake adjustment. Vpon making an adjustment, the tools must then be removed from the brake so that the brake drum may be rotated and tlle degree of clearance assessed by the mechanic. The repeated insertion and removal of too]s as well as the limited space for accomplishing the adjustment maneuvers can create a tedious operation.
SUMMARY OF THE INVENTION
The present invention provides a method and an apparatus for the adjustment of the brake shoe of a drum/shoe-type brake system. This invention allows the operator to use a single tool to t,oth deflect the pawl of the automatic adjustment mechanism to disengage it from the slar wheel and rotate the adjusting screw of the hrake mechanism through access slots in the rear of the drum brake while the pawl remains disengaged, without removal of the brake drum from the vehicle.
It is therefore an important object of the present invention to provide a method and a tool for the adjustment of the brake shoe of a drum/shoe-type brake system whereby an operator can simultaneously disengage the pawl from the star wheel and rotate the star wheel while the pawl remains disengaged.
Other objects and advantages of this invention will become apparent from the following description taken in connection with the accompanying drawings, w~herein is set forth by way of illustration and example, an embodiment of this invention.
,. ~, BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a perspective view of a conventional drum/shoe-type self-adjusting brake system.
Fig. 2 is a side view taken along line 2-2 of Fig.
1, showing the brake system as in Fig. 1, with the tool of the present invention operably positioned thereon, wherein the pawl is disengaged from the adjusting star wheel mechanism by the too], the broken lines showing the pawl engaged with the star wheel.
Fig. 3 is a fragmentary side view as in Fig. 2 showillg the tool of the present invention, and depicting clockwise movement of the star wheel from its position in Fig.
2.
Fig. 4 is a fragmentary bottom plan view of one end of the tool of ~he present invention.
Fig. 5 is a fragmentary top view of another end of the tool of the present invention.
DESCRIPTION OF THE PREFERRED EMBODIM~NT
Referring now to Fig. 1, a drum/shoe-type self-adjusting brake system, generally referred to as 10, is depicted. In this conventional brake system, the adjusting screw mechanism, or star wheel 12, is attached to a brake-adjusting spindle 14. As the star wheel 12 is rotated, the brake shoes lS and 16 attached to the brake-adjusting spindle 14 may be directed to obtain grea~er or lesser clearance between the brake drum 17 friction surface and the brake shoes 15 and 16. During normal operation, the star wht_el 12 is fixed in place by an adjusting lever or pawl 18 which is spring biased against the teeth of the star wheel 12.
When it is desired to vary the clearance between the brake shoes 15 and 16 and the brake drum 17, rotation of the brake-adjusting spindle 14 by means of the star wheel 12 is required. To accomplish adjustment of the spindle 14, the pawl or adjusting lever 18 must be disengaged from the star wheel 12 and the star wheel 12 must then be rotated either clockwise or counter-clockwise to effect the desired change in clearance between the brake drum 17 and the brake shoes 15 and 16. Persons skilled in the art will readily understand the function and details of the foregoing conventional arrangement of the drum/shoe-type self-adjusting brake system.
The brake adjusting tool of the preferred embodiment, generally referred to as 20, comprises an elongated body 22 having a plurality of bends intermediate ends 24 and 26 respectively. End 24 has a plurality of voids 28 orl at least one side of the tool 20 which are aligned in series to permit enqagement of the voids 28 with the teeth of the star wheel 12. The voids 28 of end 24 are more clearly seen in Fig. 5.
End 26 of the tool 20 contains a relatively sharp bend 30 in a single direction, defining a terminal portion 31 which is relatively U-shaped as can be appreciated from the cross-sectional portion of Figs. 2 and 3, as well as from Fig.
4. End 26 is provided with an elongated opening 38 parallel to the length of the elongated body 22 of the tool 20 and can be easily seen in Fig. 4. The opening 38 is adapted to fit around the star wheel 12 without engaging either side thereof, and will thus not interfere with the movement of the star wheel 12 when portion 31 is operatively engaging the pawl 18.
End 26 further contains a series of axially-aligned voids 34 similar to the voids 28 of end 24, and are clearly depicted in Fig. 4. Voids 34 are adapted to engage the teeth of the star wheel 12 after the pawl 18 has been disengaged, thereby permitting the star wheel 12 to be rotated as desired by the operator of the tool 20 in either a clockwise or counter-clockwise direction while the pawl 18 remains disengaged.
In an alternative embodiment, the voi-ls 28 and 34 of the tool 20 are accompanled by a series of laterally spaced grooves (not shown), which are transverse to the elongated body 22 of the tool 20, and are adapted to engage the teeth of the star wheel 12. In yet another alternative embodiment of the same invention, the grooves are not accompanied by voids and work by themselves to engage the star wheel 12 as described above.
The method of operation of the invention to accomplish adjustment of the brake shoes 15 and 16 may be best observed in Figs. 1, 2 and 3. Fig. 1 illustrates the brake housing having a generally elonga~ed slot 40, through which the tool 20 may be operatively positioned. The tool 20 is inserted so that the voids 34 of the tool 20 engage the teeth of the star wheel 12, and the terminal portion 31 of end 26 concurrently displaces the adjusting lever or pawl 18 and prevents it from engaging the teeth of the star wheel l2 and inhibiting movement thereof. The tool 20 may then be operated so as to rotate the star wheel 12 in a clockwise or counter-clockwise direction as desired and thus accomplish the proper displacement of the brake shoes 15 and 16 within tlle brake drum 17 housing. Opening 38 prevents the tool 20 from interfering with the movement of the star wheel 12 as opening 38 fits around the star wheel 12 without any engagement therewith. In Fig. 2, the pawl 18 is displaced by the tool 20 and thereby disengaged from the star wheel 12 as shown i.n solid lines. The pawl 18 is engaged with the star wheel 12 as shown by the broken lines. In Fig. 3, the pawl 18 is only partially displaced as the tool 20 moves the star wheel 12 in a clockwise direction relative to its position in Fig. 2.
The present invention can also be operated in another manner using end 24. As can be seen in Fig. 5, end 24 of the tool 20 contains no sharp bends in the tool head but does contain voids 28 and/or grooves (not shown) for engagement of the star wheel 12 teeth, and the terminal portion 25 of end 24 tapers to a relatively narrow, flat surface. Terminal portion 25 may be inserted through the access hole 40 in the brake backing plate. By application of forward pressure with relationship to the body of the tool 20, rapid adjustment of the star wheel 12 may be accomplished only in a counter-clockwise direction as the pawl 18 is temporarily displaced, without the pawl 18 remaining disengaged. In this manner, the brakes can be tightened, although they cannot be loosened.
It is to be understood that while certain forms of this invention have been illustrated and described, it is not limited thereto, ex~ept in so far as such limitations are included in the following claims.
Fig. 4 is a fragmentary bottom plan view of one end of the tool of ~he present invention.
Fig. 5 is a fragmentary top view of another end of the tool of the present invention.
DESCRIPTION OF THE PREFERRED EMBODIM~NT
Referring now to Fig. 1, a drum/shoe-type self-adjusting brake system, generally referred to as 10, is depicted. In this conventional brake system, the adjusting screw mechanism, or star wheel 12, is attached to a brake-adjusting spindle 14. As the star wheel 12 is rotated, the brake shoes lS and 16 attached to the brake-adjusting spindle 14 may be directed to obtain grea~er or lesser clearance between the brake drum 17 friction surface and the brake shoes 15 and 16. During normal operation, the star wht_el 12 is fixed in place by an adjusting lever or pawl 18 which is spring biased against the teeth of the star wheel 12.
When it is desired to vary the clearance between the brake shoes 15 and 16 and the brake drum 17, rotation of the brake-adjusting spindle 14 by means of the star wheel 12 is required. To accomplish adjustment of the spindle 14, the pawl or adjusting lever 18 must be disengaged from the star wheel 12 and the star wheel 12 must then be rotated either clockwise or counter-clockwise to effect the desired change in clearance between the brake drum 17 and the brake shoes 15 and 16. Persons skilled in the art will readily understand the function and details of the foregoing conventional arrangement of the drum/shoe-type self-adjusting brake system.
The brake adjusting tool of the preferred embodiment, generally referred to as 20, comprises an elongated body 22 having a plurality of bends intermediate ends 24 and 26 respectively. End 24 has a plurality of voids 28 orl at least one side of the tool 20 which are aligned in series to permit enqagement of the voids 28 with the teeth of the star wheel 12. The voids 28 of end 24 are more clearly seen in Fig. 5.
End 26 of the tool 20 contains a relatively sharp bend 30 in a single direction, defining a terminal portion 31 which is relatively U-shaped as can be appreciated from the cross-sectional portion of Figs. 2 and 3, as well as from Fig.
4. End 26 is provided with an elongated opening 38 parallel to the length of the elongated body 22 of the tool 20 and can be easily seen in Fig. 4. The opening 38 is adapted to fit around the star wheel 12 without engaging either side thereof, and will thus not interfere with the movement of the star wheel 12 when portion 31 is operatively engaging the pawl 18.
End 26 further contains a series of axially-aligned voids 34 similar to the voids 28 of end 24, and are clearly depicted in Fig. 4. Voids 34 are adapted to engage the teeth of the star wheel 12 after the pawl 18 has been disengaged, thereby permitting the star wheel 12 to be rotated as desired by the operator of the tool 20 in either a clockwise or counter-clockwise direction while the pawl 18 remains disengaged.
In an alternative embodiment, the voi-ls 28 and 34 of the tool 20 are accompanled by a series of laterally spaced grooves (not shown), which are transverse to the elongated body 22 of the tool 20, and are adapted to engage the teeth of the star wheel 12. In yet another alternative embodiment of the same invention, the grooves are not accompanied by voids and work by themselves to engage the star wheel 12 as described above.
The method of operation of the invention to accomplish adjustment of the brake shoes 15 and 16 may be best observed in Figs. 1, 2 and 3. Fig. 1 illustrates the brake housing having a generally elonga~ed slot 40, through which the tool 20 may be operatively positioned. The tool 20 is inserted so that the voids 34 of the tool 20 engage the teeth of the star wheel 12, and the terminal portion 31 of end 26 concurrently displaces the adjusting lever or pawl 18 and prevents it from engaging the teeth of the star wheel l2 and inhibiting movement thereof. The tool 20 may then be operated so as to rotate the star wheel 12 in a clockwise or counter-clockwise direction as desired and thus accomplish the proper displacement of the brake shoes 15 and 16 within tlle brake drum 17 housing. Opening 38 prevents the tool 20 from interfering with the movement of the star wheel 12 as opening 38 fits around the star wheel 12 without any engagement therewith. In Fig. 2, the pawl 18 is displaced by the tool 20 and thereby disengaged from the star wheel 12 as shown i.n solid lines. The pawl 18 is engaged with the star wheel 12 as shown by the broken lines. In Fig. 3, the pawl 18 is only partially displaced as the tool 20 moves the star wheel 12 in a clockwise direction relative to its position in Fig. 2.
The present invention can also be operated in another manner using end 24. As can be seen in Fig. 5, end 24 of the tool 20 contains no sharp bends in the tool head but does contain voids 28 and/or grooves (not shown) for engagement of the star wheel 12 teeth, and the terminal portion 25 of end 24 tapers to a relatively narrow, flat surface. Terminal portion 25 may be inserted through the access hole 40 in the brake backing plate. By application of forward pressure with relationship to the body of the tool 20, rapid adjustment of the star wheel 12 may be accomplished only in a counter-clockwise direction as the pawl 18 is temporarily displaced, without the pawl 18 remaining disengaged. In this manner, the brakes can be tightened, although they cannot be loosened.
It is to be understood that while certain forms of this invention have been illustrated and described, it is not limited thereto, ex~ept in so far as such limitations are included in the following claims.
Claims (4)
1. A hand tool for adjusting the star wheel of a brake adjusting spindle of an adjustable drum/shoe-type brake system, comprising:
an elongated body having a first end and a second end, and further having a plurality of bends intermediate said first and second ends;
said first end having a plurality of axially-aligned voids adapted to engage the teeth of the star wheel;
said second end having a terminal portion defined by a relatively sharp bend is said body, said terminal portion adapted to displace the adjusting lever or pawl of the brake system, and thereby disengage the pawl from the star wheel;
said second end further comprising a series of axially-aligned voids adjacent said bend intermediate said bend and said first end, said voids adapted to engage the teeth of the star wheel, and an elongated opening adjacent said voids, wherein said opening is parallel to the axis of said elongated body thereby permitting rotation of the star wheel by said tool in (Claim 1, continued) either a clockwise or counter-clockwise direction while the pawl remains disengaged.
an elongated body having a first end and a second end, and further having a plurality of bends intermediate said first and second ends;
said first end having a plurality of axially-aligned voids adapted to engage the teeth of the star wheel;
said second end having a terminal portion defined by a relatively sharp bend is said body, said terminal portion adapted to displace the adjusting lever or pawl of the brake system, and thereby disengage the pawl from the star wheel;
said second end further comprising a series of axially-aligned voids adjacent said bend intermediate said bend and said first end, said voids adapted to engage the teeth of the star wheel, and an elongated opening adjacent said voids, wherein said opening is parallel to the axis of said elongated body thereby permitting rotation of the star wheel by said tool in (Claim 1, continued) either a clockwise or counter-clockwise direction while the pawl remains disengaged.
2. The tool as set forth in claim 1, wherein said first end and said second end further comprise a series of transverse grooves adapted to engage the teeth of the star wheel.
3. A hand tool for adjusting the star wheel of a brake adjusting spindle of an adjustable drum/shoe-type brake system, comprising:
an elongated body having a first end and a second end, and further having a plurality of bends intermediate said first and second ends;
said first end having a plurality of axially-aligned transverse grooves adapted to engage the teeth of the star wheel;
said second end having a terminal portion defined by a relatively sharp bend is said body, said terminal portion adapted to displace the adjusting lever or pawl of the brake system, and thereby disengage the pawl from the star wheel;
said second end further comprising a series of axially-aligned transverse grooves adjacent said bend intermediate said bend and said first end, said grooves adapted to engage the teeth of the star wheel, and an elongated opening adjacent said voids, wherein said opening is parallel to the axis of said elongated body thereby permitting rotation of the star wheel by said tool in either a clockwise or counter-clockwise direction while the pawl remains disengaged from the star wheel.
an elongated body having a first end and a second end, and further having a plurality of bends intermediate said first and second ends;
said first end having a plurality of axially-aligned transverse grooves adapted to engage the teeth of the star wheel;
said second end having a terminal portion defined by a relatively sharp bend is said body, said terminal portion adapted to displace the adjusting lever or pawl of the brake system, and thereby disengage the pawl from the star wheel;
said second end further comprising a series of axially-aligned transverse grooves adjacent said bend intermediate said bend and said first end, said grooves adapted to engage the teeth of the star wheel, and an elongated opening adjacent said voids, wherein said opening is parallel to the axis of said elongated body thereby permitting rotation of the star wheel by said tool in either a clockwise or counter-clockwise direction while the pawl remains disengaged from the star wheel.
4. A method for adjusting the star wheel of a brake adjusting spindle of an adjustable drum/shoe-type brake system comprising the steps of:
inserting a brake adjusting tool through an opening in the brake housing;
deflecting a spring-biased pawl from engagement with the star wheel using one portion of said brake adjusting tool;
retaining the pawl in a disengaged manner from the star wheel using the brake adjusting took in order to prevent the pawl from inhibiting movement of the star wheel;
rotating the star wheel by engaging the teeth of the star wheel using another portion of said brake adjusting tool, moving said brake adjusting tool to accomplish clockwise or counter-clockwise rotation of the star wheel in order to effectuate the desired adjustment of the brake spindle; and removing said brake adjusting tool from the brake system to allow the pawl to engage the teeth of the star wheel.
inserting a brake adjusting tool through an opening in the brake housing;
deflecting a spring-biased pawl from engagement with the star wheel using one portion of said brake adjusting tool;
retaining the pawl in a disengaged manner from the star wheel using the brake adjusting took in order to prevent the pawl from inhibiting movement of the star wheel;
rotating the star wheel by engaging the teeth of the star wheel using another portion of said brake adjusting tool, moving said brake adjusting tool to accomplish clockwise or counter-clockwise rotation of the star wheel in order to effectuate the desired adjustment of the brake spindle; and removing said brake adjusting tool from the brake system to allow the pawl to engage the teeth of the star wheel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/392,885 US4922771A (en) | 1989-08-14 | 1989-08-14 | Brake adjusting tool |
| US07/392,885 | 1989-08-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2023258A1 true CA2023258A1 (en) | 1991-02-15 |
Family
ID=23552412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002023258A Abandoned CA2023258A1 (en) | 1989-08-14 | 1990-08-14 | Brake adjusting tool |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4922771A (en) |
| CA (1) | CA2023258A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9013612D0 (en) * | 1990-06-19 | 1990-08-08 | Lucas Ind Plc | Internal shoe drum brake |
| US5456338A (en) * | 1994-04-22 | 1995-10-10 | Tomkins Industries, Inc. | Brake drum providing access to brake adjuster |
| US5875695A (en) * | 1997-09-15 | 1999-03-02 | Zavilla; Terry Gerard | Drum brake tool |
| US7509778B2 (en) * | 2000-12-03 | 2009-03-31 | Simpson Strong-Tie Company, Inc. | Automatic take-up device with internal spring |
| US7168343B2 (en) * | 2005-03-09 | 2007-01-30 | Simpson Strong-Tie Company, Inc. | Limited access building connection |
| US7905066B2 (en) * | 2007-04-06 | 2011-03-15 | Simpson Strong-Tie Co., Inc. | Automatic take-up device and in-line coupler |
| US8881478B2 (en) | 2012-06-22 | 2014-11-11 | Simpson Strong-Tie Company, Inc. | Ratcheting take-up device |
| US9394706B2 (en) | 2013-10-08 | 2016-07-19 | Simpson Strong-Tie Company, Inc. | Concrete anchor |
| US9163655B2 (en) | 2014-01-14 | 2015-10-20 | Kaoru Taneichi | Thrust nut |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3858463A (en) * | 1973-05-30 | 1975-01-07 | Klavonick Rose M | Rear wheel brake adjustment tool |
| US4190931A (en) * | 1978-01-03 | 1980-03-04 | Cosmo Del Bianco | Brake adjusting spoon |
| US4321844A (en) * | 1981-06-16 | 1982-03-30 | Mrs. Peter P. Krill | Brake adjusting tool |
| US4713991A (en) * | 1982-09-28 | 1987-12-22 | Gaug Robert T | Tool for manually rotating the star wheel of a brake adjuster |
| US4479273A (en) * | 1983-06-03 | 1984-10-30 | David T. Raden | Toilet seat cover locking device |
-
1989
- 1989-08-14 US US07/392,885 patent/US4922771A/en not_active Expired - Fee Related
-
1990
- 1990-08-14 CA CA002023258A patent/CA2023258A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US4922771A (en) | 1990-05-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |